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==Cost==
Comparison of costs
* [[Brick cement tank]] of 6 m3: 3 bags of cement, 300 bricks, 3 kg of wire US$ 40
* [[Brick cement tank]] of 1 m3: 1 bag of cement, 100 bricks, 1 kg of wire US$ 20
* [[Plastic-lined tank]] of 5 m3: US$ 50
* Sub-surface ferro-cement tank of 60 m3: US$ 1,900
The bigger the volume of the storage tank, the lower the material demand (and thus costs) for construction per m3 of tank volume.
==Country experiences==
Rainwater harvesting is a technology which is extremely flexible and adaptable to a wide variety of settings, it is used in the richest and poorest societies on the planet, and in the wettest and driest regions of the world.
In Ocara, Brazil, rainwater tanks have been constructed of concrete blocks.
A low-cost option is the [[brick cement tank]], used in for example Nicaragua and Ghana.
==Manuals==
==References==
{{Joinus}}
* General Background [http://www.unep.org/depi/rainwater www.unep.org/depi/rainwater ]
* General Background [http://www.rainfoundation.org www.rainfoundation.org ]
* General Background [http://www.eng.warwick.ac.uk/dtu/rwh www.eng.warwick.ac.uk/dtu/rwh ]
* General Background [http://www.practicalaction.org www.practicalaction.org ]
*[http://www.waterland.net/showdownload.cfm?objecttype=mark.hive.contentobjects.download.pdf&objectid=1A6A3C6B-F37A-BF86-37BCD14A087EE1C9 Interesting publication about water harvesting]
